Comarum palustre

Linnaeus

Sp. Pl. 1: 502. 1753.

Common names: Purple marshlocks marsh potentilla comaret des marais
Illustrated
Synonyms: Comarum palustre subsp. angustifolium (Rafinesque) Tzvelev C. palustre subsp. arcticum (Gandoger) Tzvelev Fragaria palustris Potentilla palustris P. palustris var. parvifolia (Rafinesque) Fernald & B. H. Long P. palustris var. villosa (Persoon) Lehmann
Treatment appears in FNA Volume 9. Treatment on page 301.

Stems 1–10 (–18) dm. Leaves: petiole 5–10 (–15) cm; leaflets usually abaxially glaucous, adaxially green, sometimes silvery-silky, often aging reddish, 1.5–10 (–12) × (0.8–) 1–5 cm. Pedicels 5–25 (–30) mm. Flowers: epicalyx bractlets narrowly lanceolate to lanceolate, 2–7 (–9) mm, usually equal to or shorter than sepals; sepals greenish purple adaxially, (5–) 7–12 (–14) mm, apex acuminate; petals 2.5–6 (–8) mm; anthers dark purple, 0.8–1.2 mm, connectives thickened, greenish purple to purple; styles 0.9–2 mm. 2n = 28, (35) 36, 42, (60, 62, 63) 64.


Phenology: Flowering summer.
Habitat: Shallow, often sphagnum-dominated ponds, bogs, wet meadows, marshes, stream banks, and lake margins, mainly in boreal and low arctic habitats in the north, subalpine to alpine sites in the south
Elevation: 0–3100 m

Distribution

V9 488-distribution-map.jpg

Greenland, St. Pierre and Miquelon, Alta., B.C., Man., N.B., Nfld. and Labr., N.W.T., N.S., Nunavut, Ont., P.E.I., Que., Sask., Yukon, Alaska, Calif., Colo., Conn., Idaho, Ill., Ind., Iowa, Maine, Mass., Mich., Minn., Mont., N.H., N.J., N.Y., N.Dak., Ohio, Oreg., Pa., Utah, Vt., Wash., Wis., Wyo., Eurasia

Discussion

Comarum palustre is circumboreal; it occurs in a broad band across the northernmost United States and Canada as far north as the low arctic. Disjunct populations occur well to the north, as on Baffin and Victoria islands, and in the south, as in Gunnison County, Colorado, and the Uinta Mountains of Utah. Appropriate habitats are uncommon and geographically restricted in the southern part of the range, for example, in Idaho, Montana, and North Dakota.

Comarum palustre is sometimes divided into subspecies, varieties, and/or forms on the basis of vestiture, leaflet dimensions, and flower number (for example, M. L. Fernald and B. H. Long 1914; N. N. Tzvelev 2007). Because there is no existing consensus, and a global evaluation of the situation is beyond the scope of this work, no infraspecific taxa are recognized here. Within North America, northern populations tend to have broader leaflets and inflorescences composed of one to relatively few flowers with relatively short sepals and petals, but these differences are not consistent; similar plants occur in subalpine settings in the mountains well to the south. Chromosome numbers also vary, apparently not correlated with morphology or geography; some populations occasionally include individuals of different disploid and polyploid levels.

Horizontal stems were used occasionally by Native Americans as a medicinal aid in the treatment of dysentery and stomach cramps (D. E. Moerman 1998). Aquatic birds in particular eat the leaves and achenes.

Selected References

None.

Lower Taxa

None.

"dm" is not declared as a valid unit of measurement for this property.

... more about "Comarum palustre"
64 +, 63] +, 62 +, [60 +, 42 +, 36 +  and 28 +
dark purple +
0.08 cm0.8 mm <br />8.0e-4 m <br /> (0.12 cm1.2 mm <br />0.0012 m <br />) +
Barbara Ertter +  and James L. Reveal +
Linnaeus +
compound +  and simple +
opposite +  and alternate +
cordate +
2 cm20 mm <br />0.02 m <br /> (15 cm150 mm <br />0.15 m <br />) +
smaller +
free +  and distinct +
odd-pinnate +  and subpalmate +
Purple marshlocks +, marsh potentilla +  and comaret des marais +
Greenland +, St. Pierre and Miquelon +, Alta. +, B.C. +, Man. +, N.B. +, Nfld. and Labr. +, N.W.T. +, N.S. +, Nunavut +, Ont. +, P.E.I. +, Que. +, Sask. +, Yukon +, Alaska +, Calif. +, Colo. +, Conn. +, Idaho +, Ill. +, Ind. +, Iowa +, Maine +, Mass. +, Mich. +, Minn. +, Mont. +, N.H. +, N.J. +, N.Y. +, N.Dak. +, Ohio +, Oreg. +, Pa. +, Utah +, Vt. +, Wash. +, Wis. +, Wyo. +  and Eurasia +
not +  and aggregated +
0–3100 m +
0.7 cm7 mm <br />0.007 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
narrowly lanceolate +  and lanceolate +
0.2 cm2 mm <br />0.002 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
not flattened +  and filiform +
cymose +  and solitary +
1 cm10 mm <br />0.01 m <br /> (3 cm30 mm <br />0.03 m <br />) +
unisexual +  and bisexual +
not +  and aggregated +
0.1 cm1 mm <br />0.001 m <br /> (0.13 cm1.3 mm <br />0.0013 m <br />) +
deciduous +
0.13 cm1.3 mm <br />0.0013 m <br /> (0.16 cm1.6 mm <br />0.0016 m <br />) +
Shallow, often sphagnum-dominated ponds, bogs, wet meadows, marshes, stream banks, and lake margins, mainly in boreal and low arctic habitats in the north, subalpine to alpine sites in the south +
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
0.1 cm1 mm <br />0.001 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
0.4 cm4 mm <br />0.004 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
crassinucellate +
opposite +  and alternate +
marcescent +
deciduous +  and persistent +
10 cm100 mm <br />0.1 m <br /> (12 cm120 mm <br />0.12 m <br />) +
0.8 cm8 mm <br />0.008 m <br /> (1 cm10 mm <br />0.01 m <br />) +
reddish +  and green +
1.5 cm15 mm <br />0.015 m <br /> (10 cm100 mm <br />0.1 m <br />) +
silvery-silky +  and glaucous +
oblanceolate +  and elliptic or obovate +
1 cm10 mm <br />0.01 m <br /> (?) +  and 5 cm50 mm <br />0.05 m <br /> (?) +
pinnate +  and serrate +
crenate to deeply +
inferior +  and superior +
clustered +, biseriate +  and superposed +
2.5 cm25 mm <br />0.025 m <br /> (3 cm30 mm <br />0.03 m <br />) +
nearly +  and straight +
0.5 cm5 mm <br />0.005 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
0 (?) +  and 4 (?) +
0.6 cm6 mm <br />0.006 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
Pink (?) +, Red (?) +  and Purple (?) +
free +  and distinct +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
10 cm100 mm <br />0.1 m <br /> (15 cm150 mm <br />0.15 m <br />) +
5 cm50 mm <br />0.05 m <br /> (10 cm100 mm <br />0.1 m <br />) +
Flowering summer. +
adnate +, free +, connate +  and distinct +
not arillate +
1.2 cm12 mm <br />0.012 m <br /> (1.4 cm14 mm <br />0.014 m <br />) +
greenish purple +
persistent +
free +  and distinct +
reflexed +  and spreading +
0.7 cm7 mm <br />0.007 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
Illustrated +
free +  and distinct +
horizontal +, arising +  and decumbent to ascending +
1 +  and several +
palmate +  and pinnate +
serrate +  and entire +
persistent +
distinct +
lateral +  and subbasal +
filiform +
0.09 cm0.9 mm <br />9.0e-4 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
hairy +, appressed +  and glabrous +
Comarum palustre subsp. angustifolium +, C. palustre subsp. arcticum +, Fragaria palustris +, Potentilla palustris +, P. palustris var. parvifolia +  and P. palustris var. villosa +
Comarum palustre +
species +
horseshoe--shaped +
inconspicuous +
hemispheric +
enlarged +
not fleshy +  and spongy +
rhizomatous +  and stoloniferous +